Valve



(NoModel.) V l G. W. VAN TINE.

` VALVE. N0. 527,381. Patnted 00h. 9, 1894.

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UNITED STATES PATENT- OFFICE.

GEORGE W. VAN TINE, OF BAYONNE, NEW JERSEY.

VALVE.

SPECIFICATION forming part of Letters Patent No. 527,381, dated October9, 1894. Applicationiiled October 25, 1893. Serial No. 489,126. (Nomodel.)

To all whom it may concern:

Be it known that I, GEORGE W. VAN TINE, a citizen of the United States,residing at Bayonne, in the county of Hudson and State of New Jersey,haveinvented certain new and useful Improvements in Valves, of which thefollowing is a specification, reference being had therein to theaccompanying drawings.

My invention relates to that class of valves employed for controllingthe inlet and outlet of water or other pressure fluid to and from thecylinders of hydraulic and other Huid-operated presses, and it has forits object to provide avalve, for the'purpose stated, which will beperfectly balanced so that the pressure of the fluid will not prevent itfrom being easily moved in opening and closing the inlets and outlets,and will be of such construction that but a very short movement of thevalve piston will be required in opening and closing the valve.

My invention also comprises such a construction and arrangement of partsthat the valve may be opened or closed by a horizontal pull or push onthe operating lever or levers, such movement being more convenient andeasy for the operators than a vertical movement of the operating leveror levers would be.

In the accompanying drawings Figure 1 is a sectional elevation of avalve and appurtenances embodying my invention. Fig. 2 is a detail topview of the valve cylinder. Figs. 3 and 4 are sectional and plan views,respectively, of the valve piston,and Fig. 5 is a detail View of one ofthe links connecting the operating levers to the arms on the valvecylinder.

A denotes the valve cylinder provided with an inlet port d,communicating with an inlet pipe b leading to the pump, and with anoutlet or discharge port a communicating with an outlet pipe h leadingto the cylinder of the hydraulic or other press.

Closely fitting withinthe cylinder A is the y piston C provided with anoperating stem c and with a discharge pipe or stem c', said stemspassing through sleeves or nuts d screwed into the opposite ends of thechamber of the valve cylinder, the ends of the fluid receiving portionof the said chamber being packed by suitable glands or cupleathers d'1.

' VJointed to the upper end of the operating valve stem c are twoactuating hand levers E connected by links e with arms or projections a?on the valve cylinder A. The hand levers E are preferably of theinverted L- shaped or right-angular form shown, so that the valve pistonmay be operated, to open or close the valve, by horizontal movements oftheir depending portions, such horizontal movements, effected by pullingor pushing', being easier and more convenient for the operator thanvertical movements would be. Two of these levers E are preferablyprovided, a's shown, so that the valve p iston may be convenientlyoperated from opposite sides of the press, but it will be obvious thatone lever would answer the purpose of operating the valve piston.

The valve cylinder A is provided with a passage a3 intowhicli the inletport aopens, saidpassage communicating with the chamber of the valvecylinder both above and below or at the opposite ends of the piston C sothat the pressure of the inlowing fluid will be equal at both ends ofthe'said piston, thus evenly balancing the same; and to retain this evenpressure when the said piston is being moved to open or close the valvesaid piston is preferably provided with one or more vertical orlongitudinal passages c2 extending through it. The piston O is alsoprovided with transverse inlet and discharge passages or ports cS andc4, respectively, the port c3 communicating with vertical orlongitudinal inlet passages or ports c5, and the port c4 opening intothe vertical or longitudinal discharge passage c6 extending through thelower valve stem c'.

F denotes a receptacle into which the water from the hydraulic press isdischarged and from which` it is conveyed away by a waste pipe f, saidreceptacle being intended to be and its appurtenances, in the form of myinvention herein shown, being supported on said receptacle.

From the foregoing it will be apparent that the valve piston C willalways be evenly balanced by an equal pressure at the opposite mountedon the top of the press and the valve IOO 5 ton the even Ybalancethereof is maintained while it is being moved, 'in opening or closingthe valve, as Well asfvvhen it isstationary. It will also be clear thatowing to the close proximity to each other of the transverse into letand discharge passages or ports c3 and c4 only a very slight movement ofthe valve piston will be required in opening or closing the valve, thismovement of said piston being conveniently and easily effected byhorizontal movements of the lower ends of the operating lever or leversE.

Having thus described my invention, I claim and desire to secure byLetters Patentl. A valve, for hydraulic presses and the zo like,consisting of a valve cylinder, as A, provided with inlet and outletports, and a piston fitted to slide in the chamber of said cylinder andhaving transverse inlet and outlet passages, one or morelongitudinalinlet pas- 2 5 sages communicating with the said transverseinlet passage, and a longitudinal outlet passage communicating with saidtransverse outlet passage, the wall of the said valve cylinder beingprovided with a passage communicating with the chamber of said cylinder,at

the opposite ends-of the said piston, and with the said inlet port,combined with means for operating said piston.

2. A valve, for hydraulic presses and the 3 5 like, consisting ofa'valve cylinder, as A, provided with inlet and outlet ports, and apiston iitted to slide in the chamber of said cylinder and havingtransverse inlet and outlet passages, one or more longitudinal inletpas- 4o sages communicating with the said transverse inlet passage, oneor more longitudinal passages extending entirely through said piston,and a longitudinal outlet passage communicating with said transverseoutlet passage, the

wall of the said valve cylinder being provided with a passagecommunicating with the chamber of said cylinder, at the opposite ends ofthe said piston, and with thesaid inlet port, combined with means foroperating said piston. Y

3. The combination with the valve cylinder A provided with the arms orprojections ai, and with inlet and outlet p'orts, of the piston C ttedto slide in the chamber of said cylinder and having transverse inlet andoutlet passages, to communicate Lwith the inlet and loutlet ports ofsaid cylinder, and with longitudinal inlet and outlet passagescommunicating with said transverse inlet and outlet v passages, theoperating hand levers'E con,-

nected with the stemof said piston and having depending portions to begrasped by the operator, and the links e connectingthe fulcrums of saidlevers to the said arms or projections a2.

4:. The combination with the valve cylinder provided with inlet andoutlet ports and with a passage communicating with said inlet port andwith the opposite ends of the chamber of said cylinder, of apistonfitted to slide in said cylinder and provided with the transversepassages c3 and c4, a longitudinal passage c( communicating with saidtransverse passage c4 and one or more longitudinal passages c5communicating with said transverse passage c3, the hand levers Econnected to the piston of said valve and having depending portions tobe grasped by the operators, and links connecting the fulcrum portionsof said levers to stationary supports or projections formed on saidvalve cylinder.

In testimony whereof I ax my signature in presence of two witnesses.

GEORGE W. VAN TINE.

Witn esses HENRY CALVER, J. F. .TAQUITE

